From af9a33bfff34b9695ef2e6d8a2217876a0823dc2 Mon Sep 17 00:00:00 2001
From: Vegard Nossum <vegard.nossum@oracle.com>
Date: Tue, 12 Oct 2021 11:34:46 +0200
Subject: [PATCH] net: arc: select CRC32
Git-commit: e599ee234ad4fdfe241d937bbabd96e0d8f9d868
Patch-mainline: v5.15-rc6
References: stable-5.14.14

commit e599ee234ad4fdfe241d937bbabd96e0d8f9d868 upstream.

Fix the following build/link error by adding a dependency on the CRC32
Routines: 

  ld: drivers/net/ethernet/arc/emac_main.o: in function `arc_emac_set_rx_mode':
  emac_main.c:(.text+0xb11): undefined reference to `crc32_le'

The crc32_le() call comes through the ether_crc_le() call in
arc_emac_set_rx_mode().

[v2: moved the select to ARC_EMAC_CORE; the Makefile is a bit confusing,
but the error comes from emac_main.o, which is part of the arc_emac module,
which in turn is enabled by CONFIG_ARC_EMAC_CORE. Note that arc_emac is
different from emac_arc...]

Fixes: 775dd682e2b0ec ("arc_emac: implement promiscuous mode and multicast filtering")
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Link: https://lore.kernel.org/r/20211012093446.1575-1-vegard.nossum@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/ethernet/arc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/arc/Kconfig b/drivers/net/ethernet/arc/Kconfig
index 37a41773dd43..92a79c4ffa2c 100644
--- a/drivers/net/ethernet/arc/Kconfig
+++ b/drivers/net/ethernet/arc/Kconfig
@@ -21,6 +21,7 @@ config ARC_EMAC_CORE
 	depends on ARC || ARCH_ROCKCHIP || COMPILE_TEST
 	select MII
 	select PHYLIB
+	select CRC32
 
 config ARC_EMAC
 	tristate "ARC EMAC support"
-- 
2.26.2